The TSOP1838 or VS1838 is a miniaturized receivers for infrared remote control systems comes in a metal package. PIN diode and pre-amplifier are assembled on lead frame, the epoxy package is designed as IR filter.The demodulated output signal can directly be decoded by a microprocessor. TSOP1838/VS1838 is the standard IR remote control receiver series, supporting all major transmission codes.
TSOP1838 is sensitive to 38 KHz frequency. They have band pass filter inbuilt so ambient light will not cause any harm and this sensor will react only at 38 KHz infrared signal. TSOP1838/VS1838 is an improved version of populer IR Receiver TSOP1738 and can be directly replaced with this new IR receiver.